proto-defrag hits YouTube with its own channel:
http://www.youtube.com/user/QuakeSpeedrunning

Quake1 speedrunning is an artform with insane dedication behind it. the scene is really small and really low profile.
it deserves more credit for their hard work.

they use the original Quake singleplayer physics (aka NetQuake) where is harder to bunnyhop compared to QuakeWorld because there's more frames of friction and no movement prediction.

there are several settings for runs and any combination makes up a distinct category:
- singleplayer or coop
- easy or nightmare difficulty
- run (exit level as fast as possible) or 100% (kill all the monsters and take all secrets as fast as possible before exiting)
- segmented or marathon
(ex: single easy run segmented, coop nightmare 100% marathon)

also sometimes there are additional objectives for some special projects like killing all monsters with the axe only (Quake Done Chopped), gibbing all the monsters in the level (Quake Done Gibbed) or playing as monsters etc.

custom maps are used as well, some of them really bizarre and experimental, most of them funny or just cruel.

if you're new to the Quake1 speedrunning madness, do yourself a favor and watch this:
http://www.youtube.com/watch?v=Hr5173ivvUs - part 1
http://www.youtube.com/watch?v=5H-QwZtPVKs - part 2

more updates and details: http://speeddemosarchive.com/quake/
all contests and record breaking is open for anyone as long as you follow the rules. the quake1 speedrunner is a fine, yet dying breed. there's not much left to squeeze out of the standard singleplayer and i hope they manage to finish improving on their records one last time, before becoming a chapter in the big Quake history.

some random highlights:
http://www.youtube.com/watch?v=2MT7pNmWrsc - 00:28 killing monster with telefrag
http://www.youtube.com/watch?v=KhciwM6F2lU - nailgun glitch used at the end for killing monsters in the intermission view
http://www.youtube.com/watch?v=Pztvq53n_4w - deathmatch maps turned into singleplayer levels (ztn included)